Signal Log · SETI Institute · 2026

Space Se Aaya Mehmaan,
Humne Uska Phone Tap Kiya

74 million radio signals chhaan daale, 7 ghante line pe kaan lagaye baithe rahe — sirf yeh confirm karne ke liye ki 3I/ATLAS sach mein call kar raha hai ya nahi. 👽📡

Socho ek raat, aasman mein ek object dikhta hai jo humare Solar System ka nahi hai — kisi doosre tare se aaya hai, lakhon saal safar karke. Ab agar wo object thoda ajeeb tarike se move kare, thoda tez accelerate kare, toh ek hi khayal aata hai: "kahin yeh technology toh nahi?"

Yehi sawaal 2025 mein utha, jab astronomers ne ek naya interstellar object discover kiya — 3I/ATLAS. Aur is baar, SETI Institute ne sach mein "phone utha ke suna" ki kahin doosri taraf se koi jawaab toh nahi aa raha.

Teesra Mehmaan

3I/ATLAS humare Solar System mein aane wala teesra confirmed interstellar object hai — pehle do the 1I/'Oumuamua (2017) aur 2I/Borisov (2019). Har ek apne aap mein ek chhota sa "message in a bottle" hai, jo kisi doosre stellar system mein bana tha.

Yeh objects scientists ke liye gold hain — kyunki yeh kisi doosre tare system ka actual material humare telescopes tak leke aate hain. Lekin agar yeh natural na hokar artificial hue, toh yeh humein extraterrestrial life ka pehla direct proof de sakte hain.

24 Ghante Ki Rapid Response

Jaise hi 3I/ATLAS ki discovery announce hui, SETI Institute ki team ne 24 ghante ke andar Allen Telescope Array (ATA) ko is object ki taraf point kar diya — Northern California ke Hat Creek Radio Observatory se.

Team ne object ko 7 ghanton se zyada observe kiya, aur 1 se 9 gigahertz ki frequency range cover ki — wahi range jahan "narrowband" radio signals dhoondhe jaate hain, jo naturally nahi bante aur agar mile, toh kisi technology ka signature ho sakte hain.

Dr. Sofia Sheikh (lead author) ke mutabik, ek din humare apne Voyager spacecraft bhi kisi doosre stellar system ke liye "extraterrestrial artifacts" honge — isliye interstellar objects ke natural distribution ko samajhna zaroori hai, taaki hum future mein kisi genuine anomaly ko pehchaan sakein

— Dr. Sofia Sheikh, Lead Author, SETI Institute

74 Million Signals Ka Funnel

Observation ke dauraan, ATA ne total 74 million narrowband signals detect kiye. Sunne mein overwhelming lagta hai, lekin zyadatar signals Earth ke apne radio noise — mobile towers, satellites, WiFi jaisi cheezein — the.

Signal Filtering — 74 Million Se Zero Tak

Raw detections — ~74M

Matched to object's motion — ~200

Confirmed extraterrestrial — 0

Har bacha hua candidate signal Earth-based technology ya orbiting satellites se trace hua — 3I/ATLAS se nahi.

Jab Earth-based interference hata diya gaya, toh sirf 200 candidates reh gaye. Aur jab in 200 ko deeply analyze kiya gaya, toh har ek ka source ya toh Earth ki koi technology thi, ya phir humare hi satellites. Matlab — final count: zero technosignatures.

Toh Fir Yeh Sab Bekaar Tha?

Bilkul nahi. Co-author Valeria Garcia Lopez ne highlight kiya ki 3I/ATLAS ke results yeh dikhate hain ki humari aaj ki technology se ek real signal detect karna kitna realistic hai — isiliye search karte rehna important hai, chahe umeed kam ho.

Scientists ne yeh bhi calculate kiya ki agar 3I/ATLAS par koi radio transmitter hota, toh uski power roughly 10 se 110 watts se zyada strong nahi ho sakti thi — ek normal ghar ke appliance jitni hi.

7+ hrs

Observation time

1–9 GHz

Frequency range

10–110 W

Max transmitter power

Final Verdict — Ek Natural Traveler

Sab findings ek hi direction ishara karte hain: 3I/ATLAS ek natural, comet-jaisa object hai — koi alien spacecraft nahi. Yeh result pehle ke observations ke saath bhi match karta hai, jo already evidence de chuke the ki yeh apne tare system se nikal kar humare Solar System se guzar raha ek natural body hai.

"Voyager jaisi apni hi spacecraft ek din kisi doosre stellar system mein 'extraterrestrial artifact' banengi.
Isiliye natural interstellar objects ko samajhna zaroori hai." 🌌

Yeh study sirf 3I/ATLAS ke baare mein nahi hai — yeh dikhata hai ki jab agla interstellar object discover hoga, SETI aur ATA jaisi systems kitni jaldi react kar sakti hain. Har naya visitor ek naya mauka hai — planetary formation samajhne ka, aur ek chhoti si umeed rakhne ka ki shayad agli baar, signal sach mein kahin aur se aaye.

Source: Sheikh, S. Z. et al., "A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array," The Astronomical Journal (2026) ·